Keyless lock.



M. B. BRAND.

KEYLESS LOCK.

- APPLICATION FILED Aue. I9. 1914.

Patented Aug. 24, 1915.

lll/111111111 III l/llllllllll/Illll//Aw 1 I IIIIII ||IIIII Y j A l l GRl 0 Vv HINGTO D 3 adapted to engage a bale sfrafrns i ra l MAURICE B.BRANI), OF CHICAGO, ILLINOIS.

KEYLESS LOCK.

Specification of Letters Patent.

Patented Auw. 2d, 1915.

Application led August 19, 1914. Serial No. 857,467.

ful linpi'oveiiients in Keyless Locks; and l Ado hereby declare thefollowing to be a full,

clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to keyless or so-called combination locks, itsgeneral object being to provide a-simple and cheaply manufactured lockwhich may easily be manipulated for opening the same and which may alsobe easily re-set to a closure position.

A more specific Objectis to provide a lock having simple and effectiveguard and latch arrangements and adapted for use upon a milk-bottleholder, such as the one shown and described in my copending applicationfiled June. 27, 1914, as Serial No. 847,627.

lVhile the locking mechanism of my invention may be used in a variety ofpositions and for many different purposes it4 is particularly adaptedfor such a purpose as the one shown in the above-mentioned application,and is shown in this embodiment in the accompanying drawings, in which-Figure 1 is a fragmentary sectional view through the lock and a portionof the milkbottle holder equipped with the same, with the mechanismin'its normal locking position. Fig. 2is a similar view showingthe latchas moved to effect a movement of the guard from its normal position.Fig. 3 is a similar view showing the position of the parts when thelatch is in its releasing posi-y tion. Fig. 4 is a fragmentaryhorizontal section through the lock and milk-bottle holder along theline Ll--t of Fig. 1. Fig. 5 isa fragmentary plan view of the cover ofthe holder ,showing the actuating knob and the indicator carriedthereby, together with the dial on the cover. Fig. 6 is an enlargesectional view showing the spring means for preventing relative motionof the latch and the guard carried thereby.

In' the embodiment of the drawings, the locking mechanismof my inventionis shown as applied to a latch consisting 'of a bar 1 slidably mountedin the casing 2 of a milk-.

bottle holder equipped with a movable cover 5, said latch being alsoequipped with a hook 6 suitably posi- Y of cam formations tioned withinthe said holder, the said latching member being normally pressed intothe position shown in Fig. 1 by the engagement of a compression spring 7with a shoulder 8 upon the latching member. T he said latchmg member hasa bifurcated inner end 19 ext-ending through a slot in an auxiliarycasing 10 housing portions of the mechanism of the lock. Pivotallymounted in the said casing 10 and extending through the top of the cover5 is a shaft 11 equipped at its upper end with a knob 12 for manuallyrotating the said shaft and also equipped with a pointed indicator 13,which indicator c0- operates with suitably numbered figures on the outersurface of the cover to indicate the relative position of the rotatingshaft, as shown in Fig. 5.

Rigidly mounted upon the shaft 11 and housed by the casing 10 is a disk14;, the periphery of which disk is 'normally disposed close to (but outof contact with) the end 19 of the slidably mounted latching member,which end presents a shoulder 25, toward the adjacent edge of the disk.Formed from the disk 111 and extending radially therefrom at differentheights above the plane of said disk are prongs 15 and 16. lvlovablymounted upon the latching member 1 (as for example by means of a pivot17) is a guard 18, which guard also extends through the said slot in theauxiliary casing and is equipped at its inner end with a pair 19 and 20extending at acute angles to the axis of the bar 1. The guard 1S is alsoequipped at the juncture of the said cam surfaces with a slot 21, whichi slot is adapted to aline with a similar slot in the latching bar 1when the guard is in a position in which its shank extends parallel tothe axis of the bar 1, that is to say parallel to the cover ofthe-bottle holder. One of the forks presenting the said cam surfacesupon the guard is preferably equipped with a toe portion 22 adaptedv toabut against the bottom of the auxiliary casing 10 so as to afford astop for limiting the relative movement of the guard about its pivotalmounting 17, the said movement being restricted by suitable frictionmeans associated with the bar 1 and the latching member 18,

such as a spring 2 3. p l When the lock is to be operated so as to movethe same from the locking position of Fig. 1 to the releasing positionof Fig. 3,'

the latching bar rst slid slightly inwardly of the casing by pressing afinger against the free end of the said bar. If this sliding motion isundertaken with the mechanism in position of Fig. 1, the end 19 of thebar 1 will abut against the periphery of the disk 14, so as to preventany step being taken toward the unlocking. However, if the dial. memberof the lock has first been turned to bring the member 15 into alinementwith the sliding vlatch member (as shown Yin both Figs. 2 yand 11, theslot produced in the periphery of the disk 14 by forming the prong 15therefrom will permit the end 9 of thelatching member to be slidinwardly beyond the periphery of the disk 14., thereby bringing theprong 15 into forcible engagement with the cani surface 19, whereuponthe said cam surface will cause the guard 18 to move about its pivotalmounting into the position of Fig. 2. rEhen upon releasing the, digitalpressure on the free end of the bar 1, the spring 7 will protract thesame, thereby drawing the end 9 of the latching member out of the saidperiphera'l opening in the disk under the prong 15. Now if theindicating member is further rotated so as to bring the lower prong 16Yinto alineinent with the axis of the latching Vmember 1, this prongwill then Vbe directly opposite to the said alined slots inthe guard andthe latching member. Consequently,

upon' again digitally sliding the latching member 1 inwardly, the saidalined slots will housethe prong 16 as shown in Fig. 3, therebypermitting lthe latching member to be slid sufficiently to release thebale 6, as also shown in FigaS, thus permitting the milkbottle holder tobe opened. After the holder has been opened and again closed, it will beevident that the friction spring 23 would maintain the vguard in itsreleasing position; however, upon rotating the indicator so as 'to bringboth of the prongs 15 and 16 outof alinement with the axis of thelatching member 1, and then digitally pressing the latter inwardly, theperiphery of the disk 14 will r-engage the other of the said camsurfaces 20, thereby moving the guard 18 backto. its

original position as shown in Fig. 1.

While I have illustrated and described the look of my invention in aparticular embodiment including a friction spring 23 and spiral spring7, it will be evident that these and other details might be modifiedconsiderably without departing from the spirit of my invention. Thus,the relation between `the numerals at which the disk is operated maybevaried by tion lof the prongs 15 and 16, as shown byY altering therelative posidotted lines in Fig. 4.

I claim as my invention: 'f 1. Aykeyless lock including a rotatable.disk equipped with a pair of radial prongs disposed at differentelevations from the plane of said disk, a latching member'slidfdiskequipped with a pair of radial prongs slot normally out of alinementwith the aforesaid slot,`said guard and the other ofv said prongsequipped with coperating cam formations coacting upon a sliding of thelatching member to move said guard to bring said slots into alineinent,said latching member normally presenting toward the disk a shoulderadapted to engage the disk to prevent a sliding of the latching member.2. A keyless lock including a rotatable disk equipped with a pair ofradial prongs disposed at different elevations from the plane of saiddisk, a latching member slidably mounted with respect to said disk andequippedfat one engd with a slot adaptedv to span one of said prongs topermit a sliding of the latching member to its releasing position,and-with a shoulder adapted to abut against the periphery of the disk toprevent such a sliding of the latching'member when said slot Vand prongare knot in alinement; and a guard movable with respect to the latchingmember and normally substantially closing said slot; said guard and theother of said' prongs equipped with cooperating cam formations coactingupon va sliding of the latching member to move latching member. Y

3. A keyless lock including a rotatable disposed at `different'elevations from the plane ofsaid disk, a latching member slidioo l ablymounted with respect to said disk and Vequipped at one end with a slotadapted to span one of said prongs to permit a sliding said latchingmember and normally subiio i ofthe latching member to its/releasingposi-` t1on, and a guard pivotally mounted upon stantially Vclosing saidslot, said Guard and .n

the other of said .prongs equipped with co-` operatingcam formationscoacting upon a sliding of the latching member to move said guard outofits said slot-closing position; and spring means associated with saidguard and latching member for frictionally interlocking the same tohinder a relativejinovement thereof. f

4. A keyless lock including a shaft, a rotatable ,disk carried thereby,a1 housing for said disk and the main portion of said shaft,A

a latching member extending through said substantially radially of saidshaft housing and slidable with respect thereto, one end `ofsaidlatching member presenting a shoulder adapted to'engage the peripheralporiso tion of said disk to limit the sliding of the latching member,and a guard member carried by said latching member and movable withrespect thereto, said latching member equipped at the end nearest saiddisk with a slot normally guarded by a portion of said guard member,said disk equipped With a plurality of projections extending radiallythereof in different planes from that of the main portion of the disk,and means carried by said guard and cooperating with one of said prongsto movel said guard out of the position in which it guards said slot,thereby permitting the slotted portion of the latching member tostraddle the other o1 said prongs after the disk has been rotated tobring the last-named prong into radial alinement With the latchingmember.

5. A keyless lock including a rotatable disk, a. latching memberslidable With respect thereto in a direction substantially radial ofsaid disk and equipped at one end with a slot extending longitudinallyof said latching member, a portion of said member at one side of saidslot being adapted to abut against the periphery of the disk to preventan attempted sliding of said latching member out of its latchingposition; said disk equipped upon its periphery with a recess adapted tobe entered by the said abutting portion of the latching member and witha prong adapted to enter said slot inthe latching member when the saidportion thereof is slid into the said recess; a guard carried by saidlatching member and movable with respect thereto and normallysubstantially closing said slot; said guard and disk equipped Withcooperating formations co- Y acting, upon a sliding of the latchingmember, to move the guard out of its slot-closing position When the diskis in one position and to return the guard to its slot-closing positionupon a sliding of the latching member When the disk is in anotherposition.

6. A keyless lock including a rotatable disk, a latching member slidablewith respect thereto in a direction substatiall-y radial of said diskand equipped at one end with a slot extending longitudinally of saidlatching member, a portion of said member at one side of said slot beingadapted to abut against the periphery of the disk to prevent anattempted sliding of said latching member out of its latching position;said disk equipped upon its periphery With a recess adapted to beentered by the said abutting portion of the latching member and with aprong adapted to enter said slot in the latching member When the saidportion thereof is slid into the said recess; a

guard carried by said latching member andk means associated With saidguard and latching member for retaining said guard in either of its.said positions 'when moved thereto by the coaction of the saidcoperating formations.

7 A keyless lock including a rotatable disk equipped With a pair ofradial prongs disposed at different elevations from the plane of saiddisk, a latching member slidably mounted with respect to said disk andequipped at one end with a slot adapted to span one of said prongs topermit a sliding of the latching member to its releasing position, and aguard movable With respect to said latching member and normallysubstantially closing said slot, said guard and the other of said prongsequipped with cooperating cam formations ooacting upon a sliding ofthelatching member to move said guard out of its said slot-closing positionwhen the disk is turned to aline said last-named prong radially Withsaid guard; said guard also equipped With a cam formation adapted uponasliding of the latching member to impinge against a peripheral portionof the disk, When said disk is in another position, to return the guardto its said slot-closing position.

In testimony whereof I have signed my name in presence of twosubscribing Witnesses.

MAURICE B. BRAND.

Witnesses:

p ALBERT SCHEIBLE,

M. M. BoYLE.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

